Prior to this commit, `MimeMessageHelper` would accept `Resource`
instances as inline attachments in multipart MIME messages. If the
provided `Resource` implementation returns `null` for `getFileName()`,
the `addInLine` method would fail with a `NullPointerException` as
Jakarta activation fails to detect the content type for a null filename.
This commit falls back on "application/octet-stream" when the filename
is not known for the given resource instead of failing with an
exception.
Fixes gh-33527
This change adds several overloads of `MimeMessageHelper#addInline`
which allow users to specify a file name for inline elements added from
an `InputStreamResource` or a `jakarta.activation.DataSource`.
Closes gh-33230
send(..) -methods of JavaMailSenderImpl which is only delegating to
other methods are pulled up as default methods in the interfaces
JavaMailSender and MailSender, to make these interfaces require fewer
methods to implement.
See gh-23651
This commit deprecates the various nullSafeHashCode methods taking array
types as they are superseded by Arrays.hashCode now. This means that
the now only remaining nullSafeHashCode method does not trigger a
warning only if the target type is not an array. At the same time, there
are multiple use of this method on several elements, handling the
accumulation of hash codes.
For that reason, this commit also introduces a nullSafeHash that takes
an array of elements. The only difference between Objects.hash is that
this method handles arrays.
The codebase has been reviewed to use any of those two methods when it
is possible.
Closes gh-29051
Includes CompletableFuture-based retrieve operations on Spring's Cache interface.
Includes support for retrieve operations on CaffeineCache and ConcurrentMapCache.
Includes async cache mode option on CaffeineCacheManager.
Closes gh-17559
Closes gh-17920
Closes gh-30122
VirtualThreadDelegate built on JDK 21 for multi-release jar.
Includes dedicated VirtualThreadTaskExecutor as lean option.
Includes setVirtualThreads flag on SimpleAsyncTaskExecutor.
Includes additional default methods on AsyncTaskExecutor.
Closes gh-30241
Prior to this commit, using a dynamic `CaffeineCacheManager` would rely
on `ConcurrentHashMap#computeIfAbsent` for retrieving and creating cache
instances as needed. It turns out that using this method concurrently
can cause lock contention even when all known cache instances are
instantiated.
This commit avoids using this method if the cache instance already
exists and avoid storing `null` entries in the map. This change reduces
lock contention and the overall HashMap size in the non-dynamic case.
Fixes gh-30066
Sam Brannen
Juergen Hoeller
Yanming Zhou
Brian Clozel
Simon Baslé
Stéphane Nicoll
Sébastien Deleuze
Juergen Hoeller
Stéphane Nicoll
Johnny Lim
Rune Flobakk
Sam Brannen
Brian Clozel